Cut zucchinis in two lengthwise and then cut them in ½ inch thick pieces. Sizzle 1 cup oil in a frying pan and fry both sides of zucchinis. Take the fried zucchinis over a large Pyrex dish and sprinkle some salt.Take chicken breasts into a pot and add 3 tbsp of oil. Cook them over medium heat till they absorb their own juice. Then stir in onions and sauté for 3 minutes. Add the garlic in and cook for 1-2 minutes. If using mushrooms, stir in them and cook all of them for about 3-4 minutes over medium heat. After that, turn the heat off and transfer this mixture over the fried zucchinis evenly (see the picture).Finally, prepare the bechamel sauce (click for the directions to make the bechamel sauce).Pour the bechamel sauce all over and sprinkle with shredded mozzarella/cheddar. Bake at 400 F (200 C) oven till the surface turns light brown (for about 30-40 minutes).ENJOY